Method of and machine for operating on insoles



April 1944' H. c. PAULSEN 2,345,627

METHOD OF AND MACHINE FOR OPERATING ON INSOLES Filed March 1, 1943 4 sheets-sheet 1 VENT JAMQ. a

Apt-H4, 1944. H. c. PAULSEN 2,345,627

METHOD OF AND MACHINE FOR OPERATING ON INSOLES Filed March 1, 1943 4 Sheets-Sheet 2 8" //v ma April 4, 1944. H. c. PAULSEN 2,345,627

' I METHOD OF AND MACHINET'OR OPERATING 0N INSOLES Filed March 1, 1943 4 Sheets-Sheet 3 104 106 .usmm I I 3 112 ulmnmm j; In

April 1944. H. c. PAULSEN 2,345,627

METHOD OF AND MACHINE FOR OPERATING ON INSOLES Filed March 1, 1943 4 Sheets-Sheet 4 @12 "@890 T gls n ls Patented Apr. 4, 1944 oFF-icE METHOD OF AND MACHINE FOR OPERAT- ING ON INSOLES Hans C. Paulsen, Meclford Mass,

assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey ,ApplicationMarch 1, 1943, Serial No. 477,547

torn-2c) 24 Claims.

This invention relatesto methods of and machines .for applying reinforcing tapes or strips of material, for example canvas, to'insoles and is disclosed withlparticular reference to the reinforcement of ribbed or welt insoles, the reinforcing strip being applied only to the inner face of the rib and the adjacent body of the insole.

Objects of the invention'are so to apply the strip that distortionof the insole'will not result, to produce an improved'article, and to provide apparatus by which the improved results may be obtained.

The invention, while retaining the valuable aspects of the method and features of the machine disclosed respectively in Letters Patent of the United States No. 2,255,353 granted September 9, 1941, in the name of Stanley M. Griswold, and No. 2,242,248 granted May 20, 1941, in the names of Stanley M. Griswold and Russell K. Nash, provides a method and apparatus by the use of which improved results are obtained in that distortion of the insole is avoided without special attention on the part of the operator.

The invention, in its method aspect, consists in fulling the strip as it is applied to the insole. As illustrateda portion of-the strip is applied to the inner face of the rib, and another portion of the strip is applied to the body portion of the insole adjacent to the rib. In applying the strip in accordance with the present invention, the portion of the strip which lies adjacent to the angle between the inner face of the rib and the body of the insole is urged toward the point of application, with the result that longitudinal tension on the strip is relieved and the insole remains in the same shape it had before application of the strip; that is, the insole is undistorted.

The invention, in its machine aspect, is illustrated as embodied in a machine of the type disclosed in the Griswold and Nash patent above referred to, the machine,:however, embodyin the improvements disclosed in .Letters Patent of the United States No. 2,335,289, granted November 30, 1943, in the name of Norman E, Mariner. Machines herein, with a lower feed roll engaging the unribbed face of the insole and an upper feed roll engaging the feather'of the insole and supporting the outer face of the rib. An applying device comprising a 'roll acts to lay one marginal portion of the reinforcing strip against the body of the insole adjacent to the rib and means carried by the applying device lays the other marginal portion of the strip against the inner face of the rib,.the applying device being mounted of this type are provided, as shown on an arm of 'a manually operated rock-shaft for movement into and out of operativeposition.

I have found that better results are obtained by driving the applying roll which previously has been freely rotatable and that still better results are obtained by driving the applying roll at a peripheral speed in excess-of that imparted-to the feed rolls. To this end, theapplying-roll is provided with gear teeth and is driven bysuitable gearing connected .to the main shaft of the machine. r

The gear teeth'may be formed on that end of the applying roll whichis nearer-to the ribof the insole and may serve in place of spurs to feed the strip while the feed rolls feed .the insole. When the applying roll is driven at a peripheral speed in excess of that -of the feed rolls, the gear teeth thereon act to full the strip or urge it inthe direction-cf feed, thus relieving tension'on the strip at the point of application with the -result that distortion of the insole is avoided. Instead of the applying roll being formed in sections, as in prior machines,:it may be in one piece or soiid, in which case gear teeth may be formed on the end of theroll more remote from the rib, and teeth or "spurs of any desired :kind may be formed on the end of the roll adjacent to the rib to enhanceits feeding action at that point.

It important thatpressure be applied to the strip both by the partoi the applying roll which engages the stripcver the channel and by the part of the roll which engagesthe strip inwardly beyond the channel, and hence it is desirable that the two parts of the roll be arranged to yield relatively to each other and that at least one of the parts be driven to produce the fulling effect. Accordingly, as illustrated, the applying device comprises two rolls one of which applies the'strip at the base of the rib and over the channel and may be-termed the channel roll or base roll and a roll whichengages the strip over the body of theinsole and may zbe-termed the body roll. The base roll is mounted on a lever which is urge by a spring toward the insole, means being n vided to vary theinitial position of the roll, the tension of the spring and the amount the lever can yield in response to the applying pressure. A/i'eans is-provided for driving'the body roll which has a connection between it and the base rcll whereby the base roll is also driven notwithstanding its capacity for movement out of axial alinenient with the body roll which is driven. This connection, as illustrated, comprises radial lugs on cheer the rolls which engage radial grooves in the other.

These and other features and aspects of the invention will appear more fully from the fol.- lowing description when read in connection with the accompanying drawings and will be pointed out in the appended claims.

In the drawings,

Fig. l is a side elevation, partly in section, of the machine embodying the invention;

Fig. 2 is a front elevation of the mechanism for operating the applying roll;

Fig. 3 is an elevation, partly in section,showing the applying roll, the gear which drives it and the strip guide;

Fig. 4 is a plan view, partly in section, of the applying roll and its driving mechanism;

Fig. 5 is a view, similar to Fig.4, showing a modified form of applying roll;

Fig. 6 is a view, partly in section, of the feed rolls and an applying device in the act of laying a reinforcing strip upon the insole;

Fig. 7 is a view of an insole after being operated upon by the machine and in accordance with the present method;

Fig. 8 is a front elevation of the head of the machine showing a further modified form of applying roll in operative position;

Fig. 9 is an elevation, partly in section on the line IX-IX of Fig. 16, of the applying device shown in Fig. 8;

Fig. 10 is an elevation of the rear side of the applying device removed from the machine;

Fig. 11 is a similar view with the lever which carries the base roll removed;

Fig. 12 is an elevation of the front side of the applying device;

Figs. 13 and 14 are details showing opposite sides, respectively, of the lever which carries the base roll;

Figs. 15 and 16 are, respectively, elevations taken from opposite sides of the assembled applying device;

Figs. 17 and 18 are end views, respectively, of

the adjacent ends of the base roll and body roll; and Fig. 19 is a detail of a stud associated with the part shown in Figs. 13 and 14.

7 Referring to Fig. 1, the head of the machine comprises a frame ID in which is mounted in suitable bearings a main drive shaft I2. On the rear end of the shaft is fixed a pulley I4 driven by a belt l6 from a suitable source of power and a lower feed roll I8 is secured to the front end of the shaft. Above the shaft I2 is mounted a shaft 20 on the front end of which is an upper feed roll 22 and on the rear end of which is fixed a gear 24 which meshes with a similar gear 28 fixed to the main shaft I2. The shaft 20 has front and rear bearings in a yoke 28 pivoted at 30 to permit the upper feed roll to be raised and lowered. Above the shaft 20 is a rockshaft 32 on which is an arm 34 connected to a treadle rod 36. The rockshaft 32 is connected by means including a link 38 to the yoke 28 so that a downward pull on the treadle rod 36 will yieldingly depress thefeed roll 22 against the insole supported by the lower feed roll I8. By the same movement of the rockshaft 32 an applying roll 4!) which is mounted on an arm 42 secured to the rockshaft is brought into cooperative relation to the feed rolls I8, 22.

The above and other parts of the machine not herein described are constructed and arranged as disclosed in the Mariner patent referred to above.

In the illustrated embodiment of the present invention the rockshaft 32 is hollow or sleevelik and through it extends a shaft 50 on the rear end of which is secured by a setscrew 52 a sprocket wheel 55. cured in a similar manner to the main shaft l2 and these sprockets are connected by a chain 58. The sprocket 56 is larger and has more teeth than the sprocket 54 and hence the shaft 50 will be driven at a speed slightly in excess of that of the shaft l2. On the front end of the shaft 50 is pinned a sprocket 69 (Fig. 2) connected by a chain 62 to a sprocket 64 having the same number of teeth as the sprocket 60. The sprocket 64 is pinned to a shaft 66 having a bearing in the arm 42 formed by a bushing 68. At its rear end the shaft 66 (Fig. 4) has fixed thereto a gear Ii! which meshes with gear teeth 12 formed on the applying roll 40, the teeth 12 being similar in number to those on the gear 10. Thus, the applying roll will be driven at a speed depending on the ratio of the number of teeth on the sprocket 56 to the number of teeth on the sprocket 54 which may be readily removed and replaced by a sprocket having a different number of teeth. Preferably a sprocket 54 will be selected which has a number of teeth such that the applying roll 40 will be driven at a peripheral speed somewhat in excess of that of the feed roll 22, the applying roll and the feed roll 22 rotating, of course, in the same direction.

To give the applying roll traction on a strip S, the rear end of this roll, that is, the end which is nearer to the rib of the insole, is provided with teeth or spurs 14 (Fig. 4) so that, since the peripheral speed of the applying roll is greater than that of the feed rolls, the portion of the reinforcing strip engaged by the teeth M will be urged in the direction of feed faster than the feed can take place. Thus, not only is any longitudinal tension on the strip neutralized, but a fulling or slight lengthwise compression of the strip occurs but not to such an extent as would form wrinkles therein. This results in the strip being applied to the insole in a flat and smooth condition even where the rib of the insole curves inwardly or outwardly with respect to the inner part of the insole. As usual, the applying roll is held on a fixed stud shaft 16 (Fig. 3) by a disk or head 78 (Fig. 4) formed on the shaft, this head engaging the marginal portion of the strip which is laid against the inner face of the rib and rubbing it into firm contact therewith while the teeth M roll and pack the central portion of the strip aaginst the insole at the base of the rib and the remainder of the applying roll, including the teeth 72, rolls the inner marginal portion of the strip against the body of the insole. It will be noted that the toothed portion 14 of the applying roll is somewhat larger in diameter than the remainder of the roll so as to extend into the chanel of the insole from which the inner lip forming part of the rib was cut and turned up, thus allowing the portion of the roll having a smaller diameter to engage the strip. It is to be understood that as usual in machines of this type the applying device, when in operative position, is urged toward the rib by a spring 19 on the roekshaft 32 to cause the head 18 to rub the strip against the inner face of the rib.

In Fig. 5 a modification of the applying roll 4!) is shown. In this case the applying roll 4!) has gear teeth 80 on the end adjacent to the head it and the gear 10 is reversed in position so as to mesh with the teeth 80. The teeth 86 are formed on a part of the roll 40 which is slightly larger than the remainder of the roll so that the teeth 83 reach down into the channel and permit A similar sprocket 56 is sespring I22 seated in a recess the remaining portion of the roll, which is smooth, to engage the portion of "the strip S which is laid against thebody of the insole. In this construction the gear'teeth'80 servenot only to drive the roll but also to providethe'tractive and fulling efiect produced by theteeth I4 on the both sections of the roll, the construction shown 'inFigs. 6 and 8 to 19 was developed.

In the'Mariner patent above referred to, a sectional roll is disclosed one section of which is yielding with respect to the others but none of the sections is driven.

The rear side of the applying roll assembly is shown in Fig. and comprises a frame member 9G to which is pivoted by a headed stud 92 an angle lever 94. Thestud 92 '(Fig. 19) passes through a hole 93 in the lever and :into a hole in the member 90, the stud having a flattened side 95 which is engaged by a setscrew 98 (Fig. 10) to'hold the lever 94 in position, the head of the stud 92 being received in a counterbore I60 formed in the'lever 94 (Fig. 14). On its front face, as shown in Fig. 13, the angle lever 94 is provided with a stud I02 which receives a section I24 (Fig. 17) of the applying roll which applies a portion of the tape to the channel of the insole at the base of the rib and is called herein the base or channel roll. The stud I02 has a length corresponding to the thickness of the roll section 1 I04 and on the 'face of the roll, which is adjacent to another section I06 of the roll,three radial grooves I08 are formed, the grooves being arranged 120 apart. The section I06 of the applying roll, as shown in Fig. '18, is provided with radial projections Ill! arranged inpositions corresponding to those of the radialgrooves I08 into which they fit loosely when the roll sections I04, H16 are assembled in the relation shown in Fig. '15. The roll Ills applies a portion of the strip to the body of the insole and is termed herein the body roll. The front portionof the section I06 is provided with gear teeth I I2 whichywhen thismodified applying roll assembly is mounted on the machine, meshwith the teeth of the gear III on the shaft 66. The section 106 of the applying roll is mounted on a stud II which passes through a hole in the frame member 9.0, is held rom turning by a pin 1 I 8 entering a notch in the frame 95 (Fig. 11) and is held in place-by a nut I20, the stud being long enough to provide a suitablebearing for the roll I 06 without engaging the stud I02 on which the roll section I04 is mounted. The lugs III), however, engage the grooves 188 and drive the roll section I94while ermitting a limited amount of displacement of the axis (stud IE2) of the roll section 104 with respect to the axis (stud 'I I4) 'of the roll section I68.

From Fig. 8, which ShOWSt-hlS formof applying device in the position it assumes when the machine is operating upon an in.sole,'and'from Fig. 9, which is a view partly in section of the device in substantially the same position, it will be seen that pressure of the section I04 of the 'roll on the work tends to move the lever 94 on which it is mounted in a counterclockwisedirection about its fulcrum 92, which movement is opposed by a I23 in the leVer'IM and engaging a screw I24 threaded into a lugllfi adjusting the screw on the frame '92. The position of the roll. I64, when relieved from pressure against an'insole, is determined byan adjusting screw I28 threaded through an ear I30 on the lever '94 and engaging the lower face of the lug I25. This screw, of course, determines theinitial position of the roll I04 and is held in adjusted position by a lock nut I32. The amount the roll section I04 can yield vertically with respect to the section N35 is determined'by a stop screw I34 threaded through the lug I26 in position to engage the upper arm of the lever 94 after the spring I22 has yielded a predetermined amount, the screw I34 being .held in adjusted position by a lock nut I 36. The 'initial'tension of the spring I22, that is, the force required to displace the roll section I04 with respect to the roll section H36, may be varied by I 24 in or out, the screw being held in adjusted position by a set screw I 38.

The member 90 has on its front face a rectangular lug hi0 (Fig. 12) which fits into a corresponding recess in the arm 42 where it is held by a dowel pin in a hole I42 and by two screws .443

.in holes I44. The shaft 56 carrying the gear H! has a bushing I 46 similar to the bushing 53 located in a hole I48 in the member 96,- the gear. as indicated in Fig. 9, meshing with the teeth I I2 on the roll IIIS'and, both gears '50 and H16 having the same number of teeth.

The fulcrum 92 of the lever 94 is sufiiciently in advance of the roll N34 (to the left, Fig. 9) to permit the roll readily to swing upwardly without any binding tendency, and the coupling formed by the interengaged grooves I03 and lugs IID permits eccentric displacement of the axis of the roll Hi4 with respect to the axis of the roll I06 without disturbing the driving connection between them. By this construction the reinforcingstrip is not only laid against the inner:face of the rib but is laid in the channel at the base of the rib and against the body of the insole with adequate pressure to cause adhesion of the strip to the insole irrespective of variations in the depth of the channel; and, since the base roll which applies the strip at the base of the rib driven at a peripheral speed in excess of that of the feed rolls I8 and 22, the strip is crowded or fulled and hence distortion of the insole is avoided.

It will be understood from Figs. 3 and 18 that the strip, as in prior machines of this type referred to herein, is led from a reel through an angular strip guide or folder 152 by which the marginal portion of the strip which is to be laid against therib is bent toward the direction from which the insole is fed and then passes around a curved edge I54 on a plate carried by the folder into a position parallel to the inner face of the insole rib against which it is pressed and rubbed by the head I8 of the applying device of Figs. 4 and 5 or-by a surface I55 on the lever 24 carrying the base roll shown in Fig. 10.

As shown in Fig. 6, the upper feed roll 22 may be provided on its feather-engaging face with a portion I59 of slightly greater diameter which is insole, laying a strip of canvas against the inner face of the rib and against the adjacent portion of the body of the insole, and crowding the strip in the direction of feed to prevent distortion of the insole.

' 2. That improvement in methods of reinforcing ribbed insoles which consists in feeding an insole, laying a strip of canvas against the inner face of the rib and against the adjacent portion of the body of the insole, and crowding the strip in the direction of feed by force applied to the strip in a location adjacent to the angle between the rib and the insole body.

3. That improvement in methods of reinforcing insoles which consists in providing an insole having an upstanding rib with cement on the inner face of the rib and on the adjacent portion of the body of the insole, applying the strip to the inner face of the rib and the body of the insole, and simultaneously fulling the strip.

4 Ihat improvement in methods of reinforcing ribbed insoles which consists in continuously feeding an insole past an operating point, supporting the outer face of the rib, laying one marginal portion of the strip against the body of the r insole, forcing another marginal portion of the strip against the inner face of the supported rib, and simultaneously urging the strip endwise in the direction of feed, thus fulling the strip by supplying it faster than it is needed by the feeding of the insole.

5. In a machine for applying a reinforcing strip to ribbed insoles, means for feeding an insole, a roll for applying one marginal portion of the strip to the body of the insole, means for turning the other marginal portion of the strip at right angles to the first-mentioned portion, and means for driving the roll at a peripheral speed in excess of the rate of feed to reduce tension on the strip and thus avoid distortion of the insole.

6. In a machine for reinforcing ribbed insoles, the combination of means for supporting and feeding an insole past an operating point, an applying roll, means for guiding a strip of reinforcing material to the applying roll with a marginal portion thereof directed toward the direction from which the insole is being fed, means adjacent to the applying roll for turning said margin into a position parallel to the inner face of the rib, means for pressing the marginal portion against the rib while the applying roll presses the remainder of the strip against the body of the insole, and means for driving the applying roll at a peripheral speed in excess of the rate at which the insole is fed.

7. In a machine for applying strips of material to insoles, the combination of a pair of feed rolls for guiding and feeding the marginal portion of an insole, one feed roll extending beyond the other to support the insole, means for positively driving the feed rolls continuously, stripguiding means, an applying roll opposed to the longer feed roll to press the strip upon the adjacent face of the insole as it is fed, and means for driving the applying roll.

3. In a machine for applying strips of material to insoles, the combination of a pair of feed rolls for guiding and feeding the marginal portion of an insole, one feed roll extending beyond the other to support the insole, means for positively driving the feed rolls continuously, strip-guiding means, an applying roll opposed to the longer feed roll to press the strip upon the adjacent face of the insole as it is fed, and means for driving the applying roll at a peripheral speed in excess of'that of the opposed feed roll.

' 9. In a machine for applying strips of material to insoles, the combination of a pair of feed rolls for feeding the marginal portion of an insole, one roll extending beyond the other to support the insole, means for positively driving said rolls continuously, teeth on the shorter roll to control the rate of feed, and an applying roll driven at a greater peripheral speed than the feed rolls for pressing the strip against the insole.

10. In a machine for applying reinforcing strips to insoles, a pair of opposed driven rolls for feeding the insole, an applying device comprising a plurality of rolls arranged to apply pressure to the same side of a strip, one of said rolls being mounted to yield relatively to the other roll, and means for driving one of the rolls.

11. In a machine for applying reinforcing strips to insoles, a pair of opposed driven rolls for feeding the insole, an applying device comprising a plurality of rolls arranged to apply pressure to the same side of a strip, one of said rolls being mounted to yield relatively to the other roll, and means for driving both rolls.

12. In a machine for applying reinforcing strips to insoles, apair of opposed driven rolls for feeding the insole, an applying devic comprising a plurality of rolls arranged to apply pressure to the same side of a strip, one of said rolls being mounted to yield relatively to the other roll, means for driving one roll, and connections for drivinganother roll from said driven roll.

13. In a machine for applying reinforcing strips to insoles, a pair of opposed driven rolls for feeding the insole, an app lying device com prising a plurality of rolls arranged to apply pressure to the same side of a strip, one of said rolls being mounted to yield relatively to the other roll, means for driving one roll, andinterengaging connections for driving another roll from said driven roll.

14. In a machine for applying strips of material to ribbed insoles, 'a strip-applying device comprising a base roll arranged to lay a portion of the strip against the insole at the base of the rib, means for driving said roll, a body roll arranged substantially in coaxial alinement with the base roll for laying another portion of the strip against the body of the insole, and yielding means permitting movement of the axis of one of said rolls out of alinement with the axis of the other roll.

15. In a machine for applying strips of material to ribbed insoles, a pair of opposed driven rolls for feeding the insole, a base roll arranged to apply a portion of a strip to the insole at the base of the rib, a body roll arranged to apply another portion of the strip to the body of the insole, means for permitting the base roll to yield to pressure against the insole relatively to the body roll and means for driving both rolls.

- 16. In a machine for applying strips of material to ribbed insoles, a pair of opposed driven rolls for feeding the insole, a base r011 arranged to apply a portion of a strip to the insole at the base of the rib, a body roll arranged to apply another portion of the strip to the body of the insole, means for permitting the base roll to yield to pressure against the insole relatively to the body roll, means for driving the body roll, and means for driving the base roll from the body roll.

17. In a machine for applying strips of material to insoles, a strip-applying device comprising a rubbing element arranged to yield in response to pressure against the insole, a stud on said element, a roll mounted for rotation on said stud, said element and roll being adapted to engage the strip over a thinner portion of the insole, a roll mounted independently of the firstmentioned roll with its axis nearly in alinement With that of the first-mentioned roll and arranged to engage the strip over a thicker portion of the insole, and means for driving the roll which engages the strip over the thinner portion of the insole.

18. In a machine for applying strips of material to insoles, a strip-applying device comprising a rubbing element arranged to yield in response to pressure against the insole, a stud on said element, a roll mounted for rotation on said stud, said element and roll being adapted to engage the strip over a thinner portion of the insole, 2, roll mounted independently of the firstmentioned roll with its axis nearly in alinement with that of the first-mentioned roll and arranged to engage the strip over a thicker portion of the insole, and means for driving the roll which engages the strip over the thicker portion of the insole.

19. In a machine for applying strips of material to insoles, a strip-applying device comprising a rubbing element arranged to yield in response to pressure against the insole, a stud on said element, a roll mounted for rotation on said stud, said element and roll being adapted to engage the strip over a thinner portion of the insole, a roll mounted independently of the firstmentioned roll With its axis nearly in alinement with that of the first-mentioned roll and arranged to engage the strip over a thicker portion of the insole, and means for driving both rolls.

20. In a machine for applying strips of material to insoles, the combination of a pair of feed rolls for feeding the marginal portion of an insole, one feed r011 extending beyond the other to support the insole, means for positively driving the feed rolls continuously, strip-guiding means. an applying roll having at least two sections, means permitting one section to yield in response to pressure on the work, and means for driving one section of the roll.

21. In a machine for applying strips of material to insoles, the combination of a pair of feed rolls for feeding the marginal portion of an insole, one feed roll extending beyond the other to support the insole, means for positively driving the feed rolls continuously, strip-guiding means, an applying roll having at least two sections, means permitting one section to yield in response to pressure on the work, and means for driving both sections of the roll.

22. In a machine for applying a reinforcing strip to ribbed insoles, means for feeding an insole, a roll for applying one marginal portion of the strip to the body of the insole, means for turning the other marginal portion of the strip at right angles to the first-mentioned portion, means for driving the roll at a peripheral speed in excess of the rate of feed to reduce the tension on the strip and thus avoid distortion of the insole, and means for laying the turned marginal portion of the strip against the inner face of the rib.

23. In a machine for reinforcing ribbed insoles, the combination of a pair of opposed driven rolls for supporting and feeding an insole past an operating point, a sectional applying roll, means for driving one section of the applying roll, and connections between said driven section and another section for driving the other section also.

24. In a machine for reinforcing ribbed insoles, the combination of means for supporting and feeding an insole past an operating point, a sectional applying roll, means for guiding a strip of reinforcing material to the applying roll with a marginal portion thereof directed toward the direction from which the insole is fed, means adjacent to the applying roll for turning said margin into a position parallel with the inner face of the rib, means for pressing the turned marginal portion against the rib While the applying roll presses the remainder of the strip against the body of the insole, means for driving one section of the applying roll, and connections between the driven section and another section for driving the other section also. 7

HANS C. PAULSEN. 

